Who already built it, what they charge, and who is still live.
Every date says whether we watched it happen or reconstructed it.
The apps closest to your description, matched on meaning rather than on names, with the arrival date, price and stack of each.
Arrivals month by month, how many are still answering, how long the ones that stopped lasted. Every figure carries its sample.
Scope, non-goals, a recommended stack and the competitor table, as markdown you can hand straight to a coding agent.